PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

2645Channel,structural

Alcoa/reynolds Metals Company · NSN 9540-00-197-9865 · FSC 9540 · No Item Name Available
Verified by PartsTable
NSN 9540-00-197-9865 — this item is cataloged by the U.S. Government under National Stock Number 9540-00-197-9865. Primary manufacturer part number: 2645.
Features
  • Channel,structural — FSC 9540
  • Heat Treatment: T-6 SOLUTION HEAT TREATED
  • Second Tip Radius: 0.110 INCHES NOMINAL IN
  • Fillet Radius Where Right Flange Joins Base Flange: 0.280 INCHES NOMINAL IN
  • Left Flange Thickness at Base: 0.413 INCHES NOMINAL IN
  • Base Flange Thickness: 0.180 INCHES NOMINAL IN
  • Second Tip Style: LEFT QUARTER RADIUS
  • Second Tip Relationship to First Tip: NOT IDENTICAL
Applications
  • Applications requiring Aluminum Alloy 6061 construction
General Description

The Channel,structural, cataloged under National Stock Number 9540-00-197-9865, is classified within Federal Supply Class 9540 (No Item Name Available) of the Metal Bars, Sheets, and Shapes group. The primary manufacturer of record is Alcoa/reynolds Metals Company. Government technical data includes 30 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 7 commercial cross-references from 6 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN9540-00-197-9865
Primary Part Number2645
Item NameChannel,structural
FSC / FSG9540 / 95 — No Item Name Available
ManufacturerAlcoa/reynolds Metals Company
StatusACTIVE
Heat TreatmentT-6 SOLUTION HEAT TREATED
Second Tip Radius0.110 INCHES NOMINAL IN
Fillet Radius Where Right Flange Joins Base Flange0.280 INCHES NOMINAL IN
Left Flange Thickness at Base0.413 INCHES NOMINAL IN
Base Flange Thickness0.180 INCHES NOMINAL IN
Second Tip StyleLEFT QUARTER RADIUS
Second Tip Relationship to First TipNOT IDENTICAL
Second Tip Relationship to First TipNOT IDENTICAL
MaterialALUMINUM ALLOY 6061
Length20.000 FEET MINIMUM AND 30.000 FEET MAXIMUM FT
Basic Shape StyleCHANNEL
Fillet Radius Where Left Flange Joins Base Flange0.280 INCHES NOMINAL IN
Left Side Flange Thickness0.180 INCHES NOMINAL IN
Heat TreatmentT-6 SOLUTION HEAT TREATED
Length20.000 FEET MINIMUM AND 30.000 FEET MAXIMUM FT
Basic Shape StyleCHANNEL
Right Outside Angle90.0 DEGREES NOMINAL
Right Side Flange Thickness0.180 INCHES NOMINAL IN
First Tip Radius0.110 INCHES NOMINAL IN
Right Flange Thickness at Base0.413 INCHES NOMINAL IN
Fillet Radius Where Left Flange Joins Base Flange0.280 INCHES NOMINAL IN
MaterialALUMINUM ALLOY 6061
Fabrication MethodEXTRUDED
First Tip Radius0.110 INCHES NOMINAL IN
Weight Per Unit Measure1.900 POUNDS PER LINEAR FOOT LBS
Right Side Flange Height1.580 INCHES NOMINAL IN
Right Side Flange Height1.580 INCHES NOMINAL IN
Fillet Radius Where Right Flange Joins Base Flange0.280 INCHES NOMINAL IN
Second Tip StyleLEFT QUARTER RADIUS
Material Document and ClassificationAMS-QQ-A-200/8 FED SPEC SINGLE MATERIAL RESPONSE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
4310-00-173-5407 INTERCHANGEABLE
Ring,piston
2930-00-176-5190852B INTERCHANGEABLE
Pump,cooling System,engine
Elgin Industries Inc. Dba
4720-00-392-9652SMB201668 INTERCHANGEABLE
Hose,nonmetallic
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
5315-00-393-3600107210PC108 INTERCHANGEABLE
Pin,shoulder
Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions
4820-00-482-57822645 INTERCHANGEABLE
Diaphragm,valve,flat
Tescom Corp Dba Tescom Div Tescom
9540-00-542-2737 INTERCHANGEABLE
Channel,structural
4730-00-692-55848329452 INTERCHANGEABLE
Flange,pipe
U S Army Tank Automotive Command Amsta-Im-Mm
6610-00-889-82600852B INTERCHANGEABLE
Pitot-Static Tube
Rosemount Aerospace Inc Dba Rosemount Aerospace Inc
5970-00-960-88602645 INTERCHANGEABLE
Insulator,standoff
Halsit Holdings Llc Div Halsit Holdings, Llc Dba Abbatron
7010-01-149-7211852B INTERCHANGEABLE
Tester,bit Error
L-3 Communications Corporation Dba Global Network Solutions Div Aydin Communications Division
Cross-Reference Index
Part NumberManufacturer
2645 Alcoa/reynolds Metals Company (USA)
852B Aluminum Co of America (USA)
AMS-QQ-A-200/8 Society of Automotive Engineers Inc (USA)
60-12916 Transtar Metals Corp (USA)
QQ-A-200/8 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
SAE-AMS-QQ-A-200/8 Sae International Dba Sae International (USA)
AMS-QQ-A-200/8 Sae International Dba Sae International (USA)
Related Parts
4310-00-173-5407INTERCHANGEABLE
RING,PISTON
2930-00-176-5190INTERCHANGEABLE
PUMP,COOLING SYSTEM,ENGINE
852B
4720-00-392-9652INTERCHANGEABLE
HOSE,NONMETALLIC
SMB201668
5315-00-393-3600INTERCHANGEABLE
PIN,SHOULDER
107210PC108
4820-00-482-5782INTERCHANGEABLE
DIAPHRAGM,VALVE,FLAT
2645
9540-00-542-2737INTERCHANGEABLE
CHANNEL,STRUCTURAL
4730-00-692-5584INTERCHANGEABLE
FLANGE,PIPE
8329452
6610-00-889-8260INTERCHANGEABLE
PITOT-STATIC TUBE
0852B
5970-00-960-8860INTERCHANGEABLE
INSULATOR,STANDOFF
2645
7010-01-149-7211INTERCHANGEABLE
TESTER,BIT ERROR
852B
4820-01-275-4160INTERCHANGEABLE
VALVE,STOP-CHECK
2645
6530-01-321-5587INTERCHANGEABLE
LIGHT,SURGICAL,CEILING
2410C

Frequently Asked Questions

What is NSN 9540-00-197-9865?

NSN 9540-00-197-9865 is a Channel,structural, manufactured by Alcoa/reynolds Metals Company, classified under FSC 9540 (No Item Name Available). Status: active.

What are the part numbers for NSN 9540-00-197-9865?

NSN 9540-00-197-9865 has 7 cross-referenced part numbers: 2645 (Alcoa/reynolds Metals Company), 852B (Aluminum Co of America), AMS-QQ-A-200/8 (Society of Automotive Engineers Inc), 60-12916 (Transtar Metals Corp), QQ-A-200/8 (Federal Specifications Promulgated by General Services Administration Washington DC) and 2 more.

What NSN replaces 9540-00-197-9865?

There are 12 known substitutes for 9540-00-197-9865: 4310-00-173-5407, 2930-00-176-5190, 4720-00-392-9652 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 2645?

Key specifications for 2645: Heat Treatment: T-6 SOLUTION HEAT TREATED; Second Tip Radius: 0.110 INCHES NOMINAL IN; Fillet Radius Where Right Flange Joins Base Flange: 0.280 INCHES NOMINAL IN; Left Flange Thickness at Base: 0.413 INCHES NOMINAL IN. 30 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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